Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 113, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 17, 1996, 4:54 PM EDT for York County, Pennsylvania. It was in force for 66 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 17, 1996, 4:54 PM EDT (20:54 UTC)
- Expired
- Jun 17, 1996, 6:00 PM EDT
- In force
- 66 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County York County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 17, 5:08 PM EDT | Thunderstorm Wind | Slate Hill, PA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.9 hours before the alert went out and 73 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 60 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1448 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 28 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 172055 SVRCTP PAC133-172200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 454 PM EDT MON JUN 17 1996 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...YORK COUNTY AT 450 PM DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM OVER SOUTHERN YORK COUNTY BETWEEN SUNNYBURN AND FAWN GROVE. THIS THUNDERSTORM MAY PRODUCE HAIL...STRONG WINDS AND TORRENTIAL RAINFALL. THE STORM WILL EXIT SOUTHEASTERN YORK COUNTY AROUND 530 PM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. NICOSIA/GRUMM
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 17, 1:33 PM EDT, 3 hours 21 minutes earlier.
Area forecast discussion, Jun 17, 1:33 PM EDT, 3 hours 21 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 130 PM EDT MON JUN 17 1996 ...ZONE SUGGESTIONS... ...PIT/PHL...ADAP SHOWS DECENT CAP AND HIGHER LI'S MAINTAINING OVER NRN ZONES. HAVE NO PROBLEM IN AT LEAST DOWN PLAYING THUNDER UP NORTH TONITE. MAYBE WORD AS SHOWERS...WITH A RUMBLE OF THUNDER POSSIBLE OR SOMETHING LIKE THAT. CELLS THAT HAVE POPPED UP ELSEWHERE SO FAR SEEM RELUCTANT TO MOVE VERY FAR OR FAST. MAY BE DEALING WITH FLASH FLOODING IN SPOTS...BUT WOULD BE HARD PRESSED TO SAY WHAT AREA(S) WILL BE MOST UNDER THE GUN. FAVOR MENTION OF HEAVY DOWNPOURS EXCEPT MAYBE OVER NORTH WHERE AIRMASS IS A BIT MORE STABLE AND DRIER. ...DISCUSSION... NOT MUCH CHANGE FROM AM PACKAGE DISCUSSION...WEAK BOUNDARY ACROSS STATE SEPARATES THE SOUPY AIR OVER THE SOUTH FROM THE PLAIN OLD MUGGY AIR OVER THE NORTH. LOOKS LIKE BOUNDARY WILL NOT MOVE MUCH IN TIME JUDGING FROM GRIDDED DATA PRESSURE AND LIFTED INDEX FIELDS. BOUNDARY WILL ACT AS FOCUS FOR DIURNAL BOUTS OF CONVECTION AT LEAST AND UNTIL SYSTEM TO OUR WEST DECIDES SOME TIME MAYBE LATER THIS WEEK TO DIE OR MOVE THROUGH. SYSTEM MOVEMENT FROM WEST WILL BE HINDERED BY HINTS AT DEVELOPING REX BLOCK PATTERN AS IT CLOSES OFF AND CRAWLS TWD WRN GR LAKES. THIS KEEPS HGHTS HIGH OVER ERN SEABOARD AND MAINTAINS FLOW OF HUMID AIR FOR SVRL DAYS. DEVELOPING RIGHT ENTRANCE REGION TO THE JET SLIDES SLOWLY NORTHEAST TO NRN NEW ENG AND EVENTUALLY OFF COAST. THIS HELPS SUPPORT THE DEVELOPMENT OF AT LEAST SOME LOW LEVEL FRONTOGENETIC FORCING ALONG BOUNDARY WITH TIME. THE INCREASE IN LOW LEVEL CONVERGENCE WILL NOT HURT CONVECTIVE POTENTIAL OF WARM HUMID AIRMASS IN PLACE. SEE LITTLE CHANGE THRU MID WEEK WITH AVN KEEPING ERN HGHTS HIGH...BUT POLLUTED BY WEAK UPPER TROF TRYING TO SLITHER THRU FLOW. LA CORTE
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 1:55 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 50 min |
| Jun 17, 2:10 PM EDT | Flash Flood Warning | CTP | Schuylkill | 3 hr |
| Jun 17, 3:05 PM EDT | Flash Flood Warning | CTP | Lebanon | 3 hr |
| Jun 17, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 69 min |
| Jun 17, 4:59 PM EDT | Flash Flood Warning | CTP | Lancaster | 3 hr |
| Jun 17, 5:02 PM EDT | Flash Flood Warning | CTP | Centre | 118 min |
| Jun 17, 5:16 PM EDT | Flash Flood Warning | CTP | Lebanon | 3 hr |
| Jun 17, 5:35 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin | 55 min |
| Jun 17, 5:46 PM EDT | Flash Flood Warning | CTP | Dauphin | 3 hr |
| Jun 17, 6:55 PM EDT | Flash Flood Warning | CTP | Centre | 4 hr |
| Jun 17, 7:20 PM EDT | Flash Flood Warning | CTP | Columbia | 3 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1996Every severe thunderstorm warning in 1996
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.